Temporary Facial Swelling: When to See a Dentist - Dentistry

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The left side of my face swells up whenever I lie down or rest on it?


I have a lump on the left side of my cheek that appears when I lie down or rest on that side.
It feels round and is not painful, and it disappears after a few minutes.
Although it has been happening for several years without causing any issues in my daily life, I would like to understand the cause.
Which medical specialty should I consult for this examination?

NN, 20~29 year old female. Ask Date: 2016/05/14

Dr. Huang Tingfang reply Dentistry


Dear NN: A thorough examination is necessary to determine the issue.
You are welcome to visit our dental clinic for a consultation! Thank you! Sincerely, Dr.
Huang Ting-Fang, Department of Dentistry.

Reply Date: 2016/05/14

More Info


When it comes to temporary facial swelling, especially if it occurs only when lying down or resting, there are several potential explanations. The fact that the swelling is painless and resolves quickly is a good sign, but it’s still important to understand the underlying causes and when to seek professional help.

One common reason for temporary swelling in the face, particularly in the cheeks, is related to the salivary glands. The parotid glands, which are located near the jaw and can become swollen due to various reasons, including dehydration, certain medications, or even minor blockages caused by food particles. If the swelling is related to the salivary glands, it may occur more prominently when lying down due to changes in blood flow or pressure in the area.

Another possibility could be related to the lymphatic system. The lymph nodes in the face and neck can swell in response to infections or inflammation. If you have had any recent illnesses, even minor ones, this could be a contributing factor. Allergies can also cause localized swelling, particularly if you have been exposed to allergens while lying down, such as dust mites in bedding.

In some cases, facial swelling can be a sign of dental issues, such as an abscessed tooth or gum disease. While you mentioned that the swelling is not painful, it’s still worth considering if there have been any changes in your oral health, such as increased sensitivity or discomfort in your teeth or gums.

Given that this has been a recurring issue for several years without significant impact on your daily life, it may not be an urgent concern. However, it is always wise to consult with a healthcare professional to rule out any serious conditions. If you decide to seek medical advice, you should consider visiting a dentist or an oral surgeon first. They can evaluate your oral health and determine if there are any dental issues contributing to the swelling. If necessary, they may refer you to an ear, nose, and throat (ENT) specialist or another appropriate healthcare provider for further evaluation.

In summary, while temporary facial swelling that resolves quickly and is painless may not be a cause for alarm, it is essential to monitor the situation. If you notice any changes, such as increased frequency, pain, or other symptoms, it would be prudent to seek medical advice. A dentist or oral surgeon would be the best starting point for your concerns, as they can provide a thorough examination and guide you on the next steps based on their findings.

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